Question Pc crashing with some pixels remaining in pink and blue before restarting. (Valorant)

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Hi there,
Just recently I encountered this issue while playing valorant on my pc. After playing in a game for around 3-5 minutes my screen goes black with only a small amount of pixels left lit. These pixels are usually blue or red/pink. After a few seconds of this screen my pc restarts. Can anyone please help me with this?

 

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This is what it looks like before my pc restarts on its own